SMTP is considered a __________ based protocol.

__________ architecture refers to the organization of the communication process into layers (for example, the five-layer Internet architecture).

The idle resource can be used by any other ongoing communication in __________ Networks.

How long does it take a packet of length 1,000 bytes to propagate over a link of distance $$2{,}500\ \mathrm{km}$$ , propagation speed $$2.5 \times 10^{8}\ \mathrm{m/s}$$ , and transmission rate $$2\ \mathrm{Mbps}$$ ?

If Host A wants to send a large file to Host B and the path from Host A to Host B has three links, with rates $$R1=500\ \mathrm{kbps}$$ , $$R2=2\ \mathrm{Mbps}$$ , and $$R3=1\ \mathrm{Mbps}$$ , what is the throughput for the file transfer?

DNS service is necessary to __________.

An IP address identifies __________.

Used to maintain state of HTTP.

Time for a small packet to travel from client to server and back is called.

There is a dedicated link between subscriber and central office in DSL.

Propagation delay is variable and depends on the congestion level of the router.

The cable frequency bands are divided among users in Frequency Division Multiplexing.

In cable-based networks, there is a shared link between users and central office.

Circuit switched Networks is used in traditional Telephone Networks.

The UDP protocol belongs to the Application layer in the TCP/IP protocol.

Transmission delay increases by increasing the packet length.

One of the link layer protocols is HTTP protocol.

Circuit Switched Networks are more efficient than packet switched Networks.

Circuit Switched networks are suitable for real life applications.

The HTTP response status code that tells the user the requested document is not found on this server is 404 Not Found.

The use of web caching or proxy reduces response time for client requests.

SMTP protocol is used to retrieve emails from the mail server to clients.

Network-core devices can run user applications.

An Internet Exchange Point (IXP) is a meeting point where multiple ISPs can connect and/or peer together.

In client–server communication, the server initiates the communication.

Using HTTP persistent protocol, multiple objects can be sent over a single TCP connection.

The web server process (which uses the HTTP protocol) is identified by port number 25.

The HTTP server can maintain state about the user. In particular, the server must associate the control connection with a specific user account.

Applications that cannot tolerate loss should tolerate some delay and use the TCP transport protocol.

In client-server model, a server is the side which initiate the communication

To connect network devices in same LAN, you need a switch

In point to point connection a shared link is provided between devices

If there are 5 computers, and are connected as mesh network, number of links or physical channels are 15

One of the problems with star topology network is single point of failure. If failure in the controller the whole network will be down

In time division Multiplexing, the cable frequency band is divided among users

Circuit switched Networks is more efficient than packet switched networks

The layer responsible for the routing of datagrams from source to destination is the application layer

Internet Exchange point (XP) is private network that connects its data centers to Internet, and often bypassing tier-1

TCP protocoll is unreliable

In client-server model, a client is the side which initiate the communication

To connect network devices in same LAN, you need a router

In Multipoint connection a dedicated link is shared two devices

If there are 4 computers, and are connected as mesh network, number of links or physical channels are 16

One of the problems with star topology network is single point of failure. If failure in the controller the whole network will be down

The TCP protocol belongs to Application layer in TCP/IP protocol

Packet Switched Networks is more efficient than circuit switched Networks

The layer responsible for the routing of datagrams from source to destination is data link layer

Internet Exchange point (IXP) is private network that connects its data centers to Internet, and often bypassing tier-1

TCP protocol is unreliable

HTTP is stateless protocol, proxy servers are used to make them statefull

DNS service is necessary to translate hostname address to IP

SMTP protocol is used to retrieve emails from the mail server to clients

HTTP HEAD message is used by a client if the client needs to upload a file on the server

If the requested object is cached, the client uses Conditional GET method instead of GET method

The HTTP response status code that tells the user the requested document is not found on this server is 404 Not Found

Applications that cannot tolerate loss should tolerate some delay use

One object only can be sent over a single TCP connection when using HTTP

Time for a small packet to travel from client to server and back is called

All traffic goes through local DNS in DNS

Used to maintain state of HTTP

DNS service is necessary to ………………….

If the user needs to upload file on server, HTTP ………… message is used

Multiple objects can be sent over single TCP connection when using HTTP

Applications that cannot tolerate loss and tolerate some delay should use TCP transport protocol

SMTP Protocol is used to retrieve emails from the mail server to clients

Response time is the time for a small packet to travel from from client -to-server and back

If the requested object is cached, the client use Conditional GET method instead of GET method

The HTTP response status code that tells the user requested document not found on this server is 404 Not Found

The Use of web caching or Proxy exceeds time for client request - response

…… can bring the desired content “closer” to the user; this will reduce the delay in receiving a requested object

To handle data from multiple sockets and add transport header is called ………………

By UDP, if three hosts send segments to the same IP address and same port, all three packets will be destined to …………………………… socket/sockets

In …………………… Networks, there exist idle resources that can’t be used by others

………………… is a logical communication between processes

Using NAT, when we change addresses of hosts in local network, outside world must be notified

In UDP, there is handshaking between sender and receiver to establish connection, but there is no flow control and no congestion control

In Network layer, the control plane determines how datagram is routed among routers along end-end path from source to destination

Networks can operate with mixed IPv4 and IPv6 routers

Both propagation delay and transmission delay increased by increasing the packet length

The amount of time required to push (that is, transmit) all of the packet’s bits into the link.

SMTP is considered based protocol.

The idle resource can be used by any other ongoing communication in Networks.

If Host A wants to send a large file to Host B and the path from Host A to Host B has three links with rates $$R_1=500\text{ kbps}$$ , $$R_2=2\text{ Mbps}$$ , and $$R_3=1\text{ Mbps}$$ , what is the throughput for the file transfer?

An IP address identifies.

There is a dedicated link between subscriber and central office in DSL.

Circuit switched Networks is used in traditional Telephone Networks.

Web server process (which uses the HTTP protocol) is identified by port number 25.

Circuit Switched Networks is more efficient than packet switched Networks.

An Internet Exchange Point (IXP) is a meeting point where multiple ISPs can connect and/or peer together.

What an application-layer protocol defines?

Internet Exchange Points (IXP) are locations where ISPs interconnect. Which statements correctly describe their benefits and role? Select all that apply.

How long does it take a packet of length 1,000 bytes to traverse a single link of distance 2,500 km with propagation speed $$2.5\times10^8\ \text{m/s}$$ and transmission rate $$2\ \text{Mbps}$$ ? Assume total delay equals transmission plus propagation.

For the network address 192.168.1.0 where 10 subnets are needed, select the address class.

For the network address 192.168.1.0 where 10 subnets are needed, choose the default subnet mask.

For the network address 192.168.1.0 where 10 subnets are needed, choose the custom subnet mask that satisfies the requirement.

For the network address 192.168.1.0 where 10 subnets are needed, select the total number of subnets that result from the chosen mask.

For the network address 192.168.1.0 where 10 subnets are needed, select the total number of host addresses per subnet.

For the network address 192.168.1.0 where 10 subnets are needed, select the number of usable host addresses per subnet.

For the network address 168.168.0.0 where 60 subnets are needed, select the address class.

For the network address 168.168.0.0 where 60 subnets are needed, choose the default subnet mask.

For the network address 168.168.0.0 where 60 subnets are needed, choose the custom subnet mask that satisfies the requirement.

For the network address 168.168.0.0 where 60 subnets are needed, select the total number of subnets that result from the chosen mask.

For the network address 168.168.0.0 where 60 subnets are needed, select the total number of host addresses per subnet.

For the network address 168.168.0.0 where 60 subnets are needed, select the number of usable host addresses per subnet.

What is the range of assignable IP addresses for a subnet containing an IP address of 172.16.1.10 /19?

What is the directed broadcast address of a subnet containing an IP address of 172.16.1.10 /19?

What subnet mask would you use for the 172.21.0.0 network, such that you can get 180 subnets and 140 hosts per subnet?

Enter the last valid host on the network 192.168.50.0/27:

What is the Subnet Mask corresponding to a shorthand of /17?

Enter the valid host range for the network that the IP address 192.168.71.67/28 is a part of:

Number of needed subnets 45, Network Address 220.100.100.0. Address class … Default subnet mask … Custom subnet mask … Total number of subnets … Total number of host addresses … Number of usable addresses …

Network Address 93.0.0.0/19. Address class … Default subnet mask … Custom subnet mask … Total number of subnets … Total number of host addresses … Number of usable addresses …

What subnet mask would you use for the 172.21.0.0 network, such that you can get 180 subnets and 140 hosts per subnet?

Enter the last valid host on the network 192.168.76.0 255.255.255.192:

An IP address 10.0.0.0/8 is subnetted with a subnet mask of /16. How many subnets are created?

What is the range of assignable IP addresses for a subnet containing an IP address of 172.16.1.10 /19?

A customer is using a Class C network of 192.168.10.0 subnetted with a 28-bit subnet mask. How many subnets can be created by using this subnet mask?

Enter the first valid host on the network that the host 172.19.42.8/22 is a part of:

For number of needed subnets 45, Network Address 220.100.100.0: What is the address class?

For number of needed subnets 45, Network Address 220.100.100.0: What is the default subnet mask?

For number of needed subnets 45, Network Address 220.100.100.0: What is the custom subnet mask?

For number of needed subnets 45, Network Address 220.100.100.0: What is the total number of subnets?

For number of needed subnets 45, Network Address 220.100.100.0: What is the total number of host addresses per subnet?

For number of needed subnets 45, Network Address 220.100.100.0: What is the number of usable addresses per subnet?

For Network Address 195.200.1.0/27: What is the address class?

For Network Address 195.200.1.0/27: What is the default subnet mask?

For Network Address 195.200.1.0/27: What is the custom subnet mask?

For Network Address 195.200.1.0/27: What is the total number of subnets?

For Network Address 195.200.1.0/27: What is the total number of host addresses per subnet?

For Network Address 195.200.1.0/27: What is the number of usable addresses per subnet?

Enter the last valid host on the network 192.168.50.0/27:

What is the broadcast address of the subnet 192.168.10.64/26?

Enter the subnet the host 172.18.123.149 255.255.0.0 belongs to:

What subnet mask would you use for the 172.21.0.0 network, such that you can get 180 subnets and 140 hosts per subnet?

A host in your network has been assigned an IP address of 192.168.181.182 /25. What is the subnet to which the host belongs?

A customer is using a Class C network of 192.168.10.0 subnetted with a 28-bit subnet mask. How many assignable addresses are available in each of the subnets?

Network Address 93.0.0.0/19: Choose the address class.

Network Address 93.0.0.0/19: Choose the default subnet mask for this address class.

Network Address 93.0.0.0/19: Choose the custom subnet mask that corresponds to /19.

Network Address 93.0.0.0/19: Choose the total number of subnets created from a Class A network when using a /19 mask.

Network Address 93.0.0.0/19: Choose the total number of host addresses per subnet.

Network Address 93.0.0.0/19: Choose the number of usable host addresses per subnet.

Number of needed subnets 10, Network Address 192.168.1.0: Choose the address class.

Number of needed subnets 10, Network Address 192.168.1.0: Choose the default subnet mask for this address class.

Number of needed subnets 10, Network Address 192.168.1.0: Choose the custom subnet mask that supports at least 10 subnets.

Number of needed subnets 10, Network Address 192.168.1.0: Choose the total number of subnets created by this mask.

Number of needed subnets 10, Network Address 192.168.1.0: Choose the total number of host addresses per subnet.

Number of needed subnets 10, Network Address 192.168.1.0: Choose the number of usable host addresses per subnet.

What is the range of assignable IP addresses for a subnet containing an IP address of 172.16.1.10 /19?